Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8635-5180-00 found under Prism Optical Instrument by Elbit Systems Ltd. The National Stock Number assigned to this part is 6650014490700, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8635-5180-00.